# Test: Percentages II - Ambitious

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Question 1:   Write as a percentage $1\frac{2}{5}$
$50%$
$30%$
$140%$
$14%$
Question 2:   Find a number if $4%$ of that number is $15$
$37.5$
$60$
$6$
$375$
Question 3:   In a park grows $300$ oaks. How many trees are in the park, if the oaks make up $25%$ of all trees?
$600$
$650$
$120$
$1200$
Question 4:   Find $8%$ of $4km$
$400m$
$32m$
$320m$
$3km$
Question 5:   Cost of manufacturing parts at the factory is $680$ pounds. The introduction of new technologies has allowed to reduce the cost by $2%$. What is the cost of manufacturing parts after changes?
$£666.4$
$£672$
$£670$
$£666$
Question 6:   When grinding wheat, the yield of flour is $80%$. How much wheat should be used to get $610kg$ kg of flour?
$762kg$
$690kg$
$700kg$
$762.5kg$
Question 7:   The width of the rectangle is $6cm$ and is $32%$ of its length. Find the perimeter of the rectangle.
$48cm$
$47cm$
$49cm$
$49.5cm$
Question 8:   The alloy of gold and silver contains $40%$ of gold. What is the mass of the alloy, if the gold weighs $335g$ ?
$837.5g$
$800g$
$820g$
$810g$
Question 9:   The height of the rectangular parallelepiped is $5cm$. It is $40%$ of the length and $60%$ of the width. Find the volume of the parallelepiped.
$625{m}^{3}$
$625c{m}^{3}$
$620c{m}^{3}$
$623c{m}^{3}$
Question 10:   Find $35%$ of the sum of $1\frac{13}{14}$ and $\frac{3}{4}$
$0.04$
$\frac{1}{4}$
$0.4$
$4$